Julian had some pastries.
47 of them were tarts. The rest were puffs. He sold
35 of the tarts and 16 puffs. In the end, he had 76 pastries left. How many pastries did he sell?
| |
Tarts |
Puffs |
Comparing pastries
at first |
4x5 =
20 u |
3x5 =
15 u |
Before
|
5x4 =
20 u |
15 u |
Change
|
- 3x4 =
- 12 u |
- 16 |
After
|
2x4 =
8 u |
15 u - 16 |
The number of tarts at first is repeated. Make the number of tarts at first the same. LCM of 4 and 5 is 20.
Total number of pastries left
= 8 u + 15 u - 16
= 23 u - 16
23 u - 16 = 76
23 u = 76 + 16
23 u = 92
1 u = 92 ÷ 23 = 4
Number of pastries that Julian sold
= 12 u + 16
= 12 x 4 + 16
= 48 + 16
= 64
Answer(s): 64
